Antifreeze is a critical component for engine cooling systems, protecting them from freezing in cold temperatures and overheating in warm conditions. However, the protection it offers goes beyond temperature regulation. NINGBO INNO PHARMCHEM CO.,LTD., a prominent manufacturer and supplier of Benzotriazole (BTA) in China, explains why BTA is an essential additive for effective antifreeze formulations.

The Challenge in Antifreeze Systems

Engine cooling systems contain a mix of metals, including aluminum, cast iron, copper, and brass. These diverse metals, when exposed to the coolant (typically a glycol-water mixture), are susceptible to corrosion and galvanic attack. Furthermore, the high operating temperatures and potential for aeration can lead to oxidation and degradation of the coolant itself.

Benzotriazole: A Superior Corrosion Inhibitor and Stabilizer

Benzotriazole (CAS No.: 95-14-7), with its chemical formula C6H5N3, is a highly effective organic compound widely used in antifreeze formulations for its multifaceted protective properties:

  1. Excellent Corrosion Inhibition: BTA is particularly renowned for its ability to protect copper and its alloys (like brass and bronze) from corrosion. It forms a tenacious, passive film on these surfaces, preventing dissolution and maintaining the integrity of components like radiators and heater cores.
  2. Protection for Other Metals: While most effective on copper, BTA also contributes to the overall corrosion protection of other metals commonly found in cooling systems, working synergistically with other inhibitors.
  3. Fluid Stabilization: BTA acts as a stabilizer, helping to prevent the oxidative breakdown of glycol and other organic components within the antifreeze mixture, thereby extending its service life.
  4. pH Buffering: It can help maintain a stable pH within the cooling system, which is crucial for minimizing corrosion.

Benefits of Using BTA in Antifreeze

  • Extended component lifespan, especially for copper and brass parts.
  • Prevention of radiator leaks and blockages caused by corrosion by-products.
  • Reduced risk of galvanic corrosion between dissimilar metals.
  • Improved stability and performance of the antifreeze over time.

Partner with NINGBO INNO PHARMCHEM CO.,LTD. for Your BTA Needs

As a reliable Benzotriazole supplier in China, NINGBO INNO PHARMCHEM CO.,LTD. offers high-purity BTA (≥99.8%) in forms suitable for antifreeze manufacturing. We are committed to providing competitive BTA chemical price and consistent quality. If you are looking to buy Benzotriazole to enhance your antifreeze formulations and ensure optimal engine protection, contact us. Our expertise as a BTA manufacturer guarantees that you receive a product that meets the highest standards for performance and reliability.